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23-05-2018 22:26

Ueli Graf Ueli Graf

Bulletin : Lejeunia 2001 No.166 pp.13 pp. ref.20

20-05-2018 12:13

Rubén Martínez Gil Rubén Martínez Gil

Hola a todos. Subo unas fotos de una Ciboria que

23-05-2018 19:46

BERNARD CLESSE BERNARD CLESSE

Trouvé récemment ce que je pense être un Urceol

22-05-2018 13:21

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanos ... no he p

23-05-2018 19:32

Enrique Rubio Enrique Rubio

Hi againMinute semi-inmersed pseudothecia (up to 2

22-05-2018 13:19

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanos,   la mad

02-05-2018 12:20

Edit Szilvásy Edit Szilvásy

Hi Forum,Yesterday I found this asco on rotten bee

21-05-2018 22:40

BERNARD CLESSE BERNARD CLESSE

Je pense avoir reconnu Ciboria conformata sur déb

21-05-2018 17:28

Enrique Rubio Enrique Rubio

Hi againAscomata (thyriothecia) small (100-125 mic

21-05-2018 14:13

Jac Gelderblom

Chers amis Sur feuille de Carex j'ai trouvé des

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SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco SÁNCHEZ, 15-05-2018 23:41
Francisco  SÃNCHEZApothecians that grew, a few days ago, on very humid soil with humus, in riverbank forest with Alnus, Populus and Fraxinus.

Apothecia 3-8 mm in diameter. Hairs edge of (243.9) 275.6 - 325.3 (339.7) microns long, with truncated edge almost always, sometimes bifurcated. Shorter exciple hairs, of (138.7) 162.2 - 242.4 (325.7) microns.


Ellipsoidal, verrucous ascospores, of


(18) 18.4 - 20.7 (21.3) × (13.4) 14.1 - 16 (16.6) microns
Q = (1.2) 1.22 - 1.4 (1.5); N = 28
Me = 19.7 x 15.2 microns; Qe = 1.3


Esporal decoration formed by isolated warts of (0.7) 0.9 - 1.4 (1.5) microns in height.


Ascas (238.7) 241.1 - 312.5 (337.2) × (18) 19.5 - 29.3 (30) microns


Paraphysis of (243.9) 275.6 - 325.3 (339.7) microns in length, with terminal element usually widened (6.3) 7.3 - 12.3 (13.4) microns wide.


For the shape, spores decoration and length of the hairs I think of Scutellinia kerguelensis or S. umbrorum. Although I have found in the literature contradictory information on the measures of the hairs and spores decoration in both species.


What is your opinion?


Thank you very much.

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Malcolm Greaves, 16-05-2018 15:45
Malcolm  Greaves
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco
Did you try to see if the spore wall loosened in heated cotton blue.
The spore shape and size and the hair features and size you have fit well for S superba. The sketch of the spore in Schumacher shows the spore as broadly ellipsoid like yours but the SEM picture shows a much more ellipsoid shape.
Although the spores are the right shape they look too small and have the wrong ornamentation for S kerguelensis. The hairs are also too short. The spores are a better fit for S umbrorum but again the hairs are a bit short and have the wrong root and number of septa.
Mal
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Francisco SÁNCHEZ, 17-05-2018 00:22
Francisco  SÃNCHEZ
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Dear Malcom, I have read the description of the species that you propose to me, Scutellinia superba, in the monograph of Schumacher and it seems to me that it coincides a lot with that of my apothecia. I will try to check the separation of outermost wall.

Thank you very much for your didactic comments.

Francisco SÁNCHEZ, 17-05-2018 12:10
Francisco  SÃNCHEZ
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Good afternoon, Malcom.

I do not have acetic acid nor cotton blue.

I have Lactophenol Blue. Can I do the test with this compound?

Malcolm Greaves, 17-05-2018 12:49
Malcolm  Greaves
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco

I am fairly sure that Lactophenol Blue is what I am calling L Cotton Blue.

Mal